Modulus Function

Q.

Question 115

From given integers in Column I, match an integer of Column II, so that their product lies between - 19 and -6.
$\begin{array}{cc}& \\ \text{Column I}& \text{Column II}\\ -5& 1\\ 6& -1\\ -7& 3\\ 8& -2\end{array}$

Q.

Select the correct approach for solving a pair of linear equations in 2 variables by elimination method.
(i) Add or subtract one equation from the other so that one variable gets eliminated.
(ii) Multiply both the equations by any non-zero constant to make the coefficients of one variable (either x or y) numerically equal.
(iii) Solve the equation in one variable (x or y) to get its value.
(iv) Substitute the value of x (or y) in either of the original equations to get the value of the other variable.

1. (i), (iv), (ii), (iii)

2. (ii), (i), (iv), (iii)

3. (ii), (i), (iii), (iv)

4. (i), (ii), (iii), (iv)

Q. The domain of the function, f = {(1, 2), (2, 3), (4, 5)} is ______.

1. {1, 2, 4}
2. {2, 3, 5}
3. {1, 2, 5}
4. {1, 2, 3}

Q. What is the value of |2 - 5|?

1. 2
2. 5
3. 3
4. -3

Q. If $(2,0)$ is a solution of the linear equation $2x+3y=k$, then the value of $2\sqrt{k}$ is

1. $5$
2. $6$
3. $2$
4. $4$

Q. if x = root 7 / 5 and 5/x = p root 7, then find the value of p ?

Q. Find the domain of the function.

1. R - {-1}
2. R - {-2}
3. R - {0}
4. R - {-3}

Q. if X equal to 4 by 3 minus root 5 find the value of x + 4 by x